IDEAMBIENTE S.r.l. - Varese (VA): environmental consulting.

EUROGEO S.r.l. - Sesto S. Giovanni (MI): geological drilling.

A4E ACTION FOR ENVIRONMENT S.r.l. - Varese (VA): geological drilling.

IDROSONDA S.r.l.- Corsico (MI): wells and piping for drinking water.

ING. NARDELLO PAOLO - Bisuschio (VA): project management and coordination, certifications, final testing.

DOTT. GEOL. CRINITI GRAZIANO - Milano (MI): penetrometric test.